Formula
Hz to mHz conversion formula
Use this relationship for a direct conversion:
mHz = Hz x 1,000
Worked example
2 Hz = 2,000 mHz.
All SI prefix conversions are exact; rpm assumes each revolution is one complete cycle.
Frequency conversion
Convert Hertz to Millihertz
1 hertz (Hz) equals 1,000 millihertz (mHz). Enter any value below to convert from Hz to mHz.
Enter a value and choose units. Results update instantly.
1 Hz = 1,000 mHz
All Frequency units
From 1 Hz| Unit | Value |
|---|---|
| Millihertz mHz | 1,000 |
| Hertz Hz | 1 |
| Kilohertz kHz | 0.001 |
| Megahertz MHz | 0.000001 |
| Gigahertz GHz | 0.000000001 |
| Terahertz THz | 1e-12 |
| Revolution per minute rpm | 60 |
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Quick reference
Hertz to Millihertz table
| Hertz (Hz) | Millihertz (mHz) |
|---|---|
| 0.01 | 10 |
| 0.1 | 100 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
From unit
About the hertz
One cycle per second.
Symbol: Hz
To unit
About the millihertz
One thousandth of a hertz.
Symbol: mHz
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Related conversions
Source
Conversion standard
Definitions are checked against BIPM SI Brochure: hertz. Calculations use full internal precision before display rounding.
View the complete frequency converterQuestions
Hz to mHz FAQ
How do you convert hertz to millihertz?
Use the formula mHz = Hz x 1,000. 1 hertz (Hz) equals 1,000 millihertz (mHz).
Is the Hz to mHz conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.